📐 Mathematics · Sequences and Series · JEE

The 7th term of GP is 192 and common ratio is 2. Find the first term.

Answer: 3.

Correct answer: B. 3

Explanation: an = a × r^n-1. a × 2⁶ = 192. a × 64 = 192. a = 3.

Bar heights for AP 2, 5, 8, 11 with the common difference d=3 marked between consecutive terms.

Concept context

Arithmetic progressions, geometric progressions, and sums